#memory-grid {
    display: grid;
    grid-template-columns: repeat(4, 60px);
    gap: 10px;
    justify-content: center;
    margin-top: 10px;
}
.card {
    width: 60px;
    height: 60px;
    font-size: 2rem;
    background: #f0f0f0;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}
.card.matched {
    background-color: lightgreen;
}
.avatar {
    font-size: 2rem;
    margin: 5px;
    cursor: pointer;
}
#memory-timer {
    font-size: 1.2rem;
    margin-top: 10px;
    display: block;
}
#scoreboard {
    margin-top: 10px;
    font-size: 1.1rem;
    text-align: left;
}